Pile shell or case



G. R. HECKLE.

PILE SHELL 0R CASEl APPLlcATloN FILED DEC.9,191s. RENEwEn sEPT.z,1920.

1,366,179. Patented Jan. 18, 192L l y0@ l;

Piiriiu'i' OFFICE.

`GEORGE R. HEt'JKIl'iIEl,` OF MONTREAL, QUEBEC,` CANAD.

riLn SHELL on cAsn Specification of Letters Patent. I Patentedj'n. 18" 1921.

Application tiled December. 9, 1918, SerialNo. 136,069. Renewed September 1, 1920. Serial No. 407,506.

To cllwhom z't may concern.:

Be it known that I, GEORGE R. HECKLE, of the cit of Montreal, in the Provinceof Quebec, ominion of Canada, have 1nvented 'certain new and useful Improvements in Pile Shells or Cases; and I do hereby declare that the following is a full, clear,and exact description thereof. p

My invention relates particularly to the shells for piles of the 4Raymond type in which the shell is driven lby acore receiving the direct impactsand withdrawn when the shell has been sunk toV a sufficient depth to sustain the load it is desired to ca rry when charged with a' cementitious filling. It may be applied howeverwith advantage to shells of suiiicient rigidity to be driven .i

by direct impact.A

The object of the invention is to provide a pile member of 4the nature above menv tioned capable of offering maximum resistance to an outside pressure and at the same time possess suf'iicient rigidity to, if desired, l be driven by the impacts of a piledriver acting direct] thereon.

To this en theinvention may be said to consist, broadly, of a corrugated shell with its corrugations running lon itudinally, and havin the functions of a eam imparted to eac of its corru ations by supporting" stiil'ening rings suit'a ly spaced within the shell and connected lsecurely to the inner. curves. As each corrugation functions as a y beam the shell offers maximum resistance to outside pressure; and at the same time the rings afford means to sustain' the abrasive action of the core when one is used. A further feature of the invention is a permanent coating or casing of cementitious material on the outside surface of the shell. The pur pose of-this coating is to afford-a permanent protection foigthe metal and include the metal in the pleas a permanent reinforcement. If desired `the corrugated member maybe of expanded metal or other mesh, or plain"s'heetmeta1. This shell maybe of suiicient length to act as a pile or, to meet greater depths, it may be made in sections and the reinforcement metal beextended beyond the ends to effect a bond between contiguous sections. For full comprehension, however, of my invention reference must be had to the 4acccmpanying drawings in which similar reference characters indicate the same parts, and wherein:

l moved Fig. 3 is a similar view to Figs. l and 2 and illustrating a complete pile constructed according to this invention, driven in the ground;

l Fig. 4 isa transverse sectional view taken on line 4-4 Fig. 1;'` fr f Fig. 5 isa similar view to Fig. 4 with the core removed,the section being taken on line 5 5 Fig. 2; Y

Fig. 6 is a horizontal sectional view taken on line 6-6 Fig. 3;

Fig. Z illustrates in part elevation and part sectional views, two sections -of a pile showing particularly their connection and the core for driving a lsectional pile constructed 'according to my invention; and

. Figs. 8 and 9 are fragmentary vertical sectional views of the complete shell unfilled; and v i Figs. 10 and 11 are .detail fragmentary sectional views illustrating the joint between the interengaging ends of each pair of sec tions of the shell.

Heretofore it has, been the practice to employ unprotected metal shells which were the shell being partly allowed to remain in the ground, and in a comparatively short time completely rotted away or heavier metal shells were used and withdrawn. But both practices are unecenomical. I have solved the problem by prothe ground has a compactness ofering little external pressure upon the shell.

q[n order to adapt the shell to offer maximum resistence to outside pressure, a series of steel rings 12 are preferably uniformly spaced within the shell and connected by rivets 14 or other suitable means to the inner curves 15 of the corrugations. These rings convert each eorrugation into a beam, the tension element of which is the portion of the ring between the rivets, and the compression element the outward curve of the corrugation. This trussed shell is suitable for driving through very hard ground owing to the fact that the rings act as supports for the driving core if it and the shell are tapered.

In order to afford a permanent protection for the metal and include the metal as a permanent reinforcement for the pile, I apply a cementitious coatingl or outside casing 16. This cementitious coating is applied uniformly over the entire surface and in a manner to present a cylindrical perimeter.

In order to take care of internal strains and at the same time distribute the stresses in the cementitious coating, I encircle my shell if made of expanded metal or other mesh,with a spiral length 40 of wire, and

` if the shell consists of smooth sheet metal,

with either spiral wire or a comparatively light-Weight mesh, or both. The cementitious coating is afterward applied and the shell produced obtains the result above mentioned.

This outside coating has the effect of conlverting the outside curves of the shell into l a circumferential series of arches the lateral thrust of which in a circumferential direction relatively to the shell, is absorbed by the cement and the inward curves of the cortrugations.

To meet certain requirements my improved pile shell is made in sections, as shown in Fig. 7, of straight cylindrical form instead of being tapered as shown in Fig. 1. In this case the corrugated reinforcing metal 10 is projected beyond one end as at I17 and notched as at l8- to straddlefthe rivets 14 by which the ringsare secr'iriedbtol they" shell. This stra-ight cylindrical"4 sectional form enables a pile of any required depth to be formed by first driving the shell-member illustrated in Fig. 1 or any pointed'mm? ber and then adding sections such as illustrated in Fig. 7 until the required depth is reached. If the ground being piled is of such eompactness that a core must be used,

a member such as illustrated in Fig. 1 may be driven as a leading section or in fact any of the well known forms of pile points such as indicated at 125. The core may be then withdrawn and the pile filled with concrete or other cementitious substance or sand, gravel or other material as'may be required; after which a. flat-ended core 200 is used, with its lower end of a diameter corresponding with the interior diameter of the superimposedsection. The form of core I prefer to use with a sectional shell consists of a head member 22 and an annular section 23 yieldingly connected to the head to form a reetly to the filling of the driven section and the annular member translates a minor portion of the force of the impacts into a substantially yielding progressive force actin r upon the shell section and causing it, an through it the driven shell, to follow the 4point and filling. The sleeves 123 serve to adjust the tension of the springs and consequently the resistance to the relative movement between the arts of the head, the effect being that di erent resistances in the material through which the shell is passing, may be taken care of.

In order to reinforce the joints between the sections a ring 25 of sufiicient width to overlap the joint is located at the top of each section the projecting portion 17 of the reinforcement metal straddling the rivets 14 as above mentioned.

This design of shell is adapted to meet the requirements where a vertical reinforcement is necessary to take care of abnormal external loads. Thisr being effected any time before the shellis filled, by introducing rods 30 or wire 31 into the spaces within the corrugations.

A shell constructed.` as above described is designed to meet any requirement and carry any load, and, furthermore, is adapted to offer maximum resistance to the pressure of the material into which it may be driven, and sustains this pressure either when driven by a core which does not sustain it internally or after'a tapered core has been l withdrawn.

Although the mesh may be used in connectio'npwith expanded metal shells it may in someeases beused with shells of plain sheet iron. In Figs. 1 and 2 the pile shell of plainl sheet iron is illustrated, while in Fig. 3 a shell of expanded metal without the Wire mesh is shown, the construction shown in Figs. 4 and 5 being corrugated expanded metal with the use of wire mesh.

What I claim is as follows 1. A trussed hollow concrete pile-shell consisting of corrugated metal with the corrugations running longitudinally and rigid annular stiffeners uniting the inner curves of the corrugations for the purpose of converting each corrugation into a beam, and a cementitious coating for the corrugated metal. v

2. A vtrussed concrete pile-shell consisting of metal longitudinally corrugated and a series of rigid rings within the shell, and

' devices fastening the rings to' the inner joining sections, annular sti eners secured to the inner curves of the corrugations and adapted to convert each corrugation vinto a beam, longitudinal reinforcing members Within the corrugations, and a cementitious filling for the sald sectional shell.

4. A pile comprising sections of shell each consisting of a longitudinally corrugated metallic member surrounding the same and having a series of rings Within the same, de vices securing the rin s to the inward curves of the corrugations, t e ring at one end being of suliicierit Width to lap the joint, an

outer casing of cementitious material, the

metallic member of each section v projecting lnto the adjoining section and havin its projecting portion notched to straddle the i devices fastening the end ring in lace, and a cementitiousfilling for the saidj shell. Y

In testimony whereof I have signed my yname to this specification in the presence of two witnesses. i

p j f GEORGE R. HECKLE. Witnesses: i WILLIAM J. C. HEWETsoN, BLANCHE BOURGAULT.

sectional 

